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nih.gov
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Lozano, R (15 de dezembro de 2012). «Global and regional mortality from 235 causes of death for 20 age groups in 1990 and 2010: a systematic analysis for the Global Burden of Disease Study 2010.». Lancet. 380 (9859): 2095–128. PMID23245604. doi:10.1016/S0140-6736(12)61728-0